| Serie 1 |
| María Gracia Villaseca Quijarro | Huelén | 2 | 11.15 | 1 q |
| Emilia Mujaes Jacob | Alemán de Santiago | 3 | 11.24 | 2 q |
| Rosa De La Maza De La Cerda | Villa María Academy | 6 | 11.40 | 3 |
| Maria Errazuriz Kramer | Los Andes | 4 | 11.75 | 4 |
| Antonia Silva Bascuñan | San Francisco Javier de Huechuraba | 5 | 11.81 | 5 |
| Beatriz Leonor Silva Cárcamo | The English Institute | 1 | DNS | |
| Serie 2 |
| Fernanda Martinez Amenabar | Villa María Academy | 6 | 10.87 | 1 q |
| Amanda Gil Saragoni | Alemán de Santiago | 5 | 11.12 | 2 q |
| Amanda Lewin Pacheco | San Benito | 3 | 11.23 | 3 q |
| Emilia Cumsille Kaiser | Alemán de Santiago | 4 | 12.10 | 4 |
| Valentina Rouret Tapia | Internacional SEK | 2 | 12.11 | 5 |
| Sofía Figueroa Ivovich | San Benito | 1 | DNS | |
| Serie 3 |
| Camila Tavonatti Gómez | Nazaret | 6 | 11.09 | 1 q |
| Florencia Colomba Tavonatti Gómez | Nazaret | 1 | 11.27 | 2 q |
| Josefina Calderón Barrera | Huelén | 5 | 11.61 | 3 |
| Rosario Guadalupe Figueroa Delano | San Anselmo | 2 | 11.77 (11.760) | 4 |
| Agustina Ureta Inglesi | Los Andes | 3 | 11.77 (11.765) | 5 |
| Dominga Zenteno Maturana | Juanita de los Andes | 4 | DNS | |
| Serie 4 |
| Maria Gracia Prieto Correa | San Benito | 6 | 11.21 (11.202) | 1 q |
| Colomba Undurraga Carey | Everest | 1 | 11.23 | 2 q |
| Magdalena Lagos Diaz | Huelén | 5 | 11.37 | 3 q |
| Milagros Castro Feijoo | Everest | 4 | 11.71 | 4 |
| Valeria Bravo Gonzalez | Internacional SEK | 2 | DNS | |
| Ignacia Vigil Vasquez | Everest | 3 | DNS | |
| Serie 5 |
| Jacinta Dominguez Urrejola | San Anselmo | 2 | 11.35 | 1 q |
| Carolina Fellay Marin | Nazaret | 3 | 11.48 | 2 |
| Josefina Andrea Muñoz Salvo | The English Institute | 4 | 12.19 | 3 |
| Agustina Lobos Valencia | San Francisco Javier de Huechuraba | 5 | 12.48 | 4 |
| Francisca Belen Lizana González | The English Institute | 1 | 12.79 | 5 |
| Josefina Jara Muñoz | Juanita de los Andes | 6 | DNS | |
| Serie 6 |
| Emilia Bascuñan Salvestrini | Villa María Academy | 4 | 11.11 | 1 q |
| Maria Ignacia Ruiz Moreno Lagos | Los Andes | 5 | 11.21 (11.201) | 2 q |
| Isidora Campos Castellano | Internacional SEK | 2 | 12.15 | 3 |
| Florencia De Los Ángeles Azola Tapia | Juanita de los Andes | 3 | DNS | |
| Josefina María Varas Barros | San Anselmo | 6 | DNS | |
